How to output binary data to a file in Java?

Question

I\'m trying to write data to a file in binary format for compression. The data consists entirely of floating points so I decided to quantize the data to an intergers between

Answer 1

What about the DataOutputStream. You can write int which contains 2 of your data integers.

DataOutputStream dos = new DataOutputStream(new FileOutputStream(<path>));
ArrayList<Integer> list = new ArrayList<Integer>();
int sum;
for( int i = 0; i < list.size(); i++ ) {
    if(i%2!=0){
        sum |= list.get( i ).intValue()<<16;
        dos.writeInt( sum );
    } else {
        sum = list.get( i ).intValue();
    }
}

Answer 2

Maybe this fragment will help.

 int i = 42;
 DataOutputStream os = new DataOutputStream(new FileOutputStream("C:\\binout.dat"));
 os.writeInt(i);
 os.close();